How To Sand Concrete Slab. Of cement = ratio of cement / total ratio x dry volume = 1 / 7 x 359.13 = 51.30 cft Layer of compacted gravel under the new concrete.
Dry volume = wet volume x 1.54 (wastage of sand bulking all included) = 233.2 x 1.54 = 359.13 cft. Get results from 6 engines at once The sand layer serves the same purpose of normal blinding layer under concrete structure:
As with all material, it has to be placed correctly and compacted properly.
The sand layer serves the same purpose of normal blinding layer under concrete structure: But it does make drainage more difficult. Of cement = ratio of cement / total ratio x dry volume = 1 / 7 x 359.13 = 51.30 cft Construct the form with 2×4 or 2×6 lumber and secure in place by wood stakes and deck screws.